Compensator for signals



J. J. TURNER. GOMP ENSAT OR FOR SIGNALS.

Patented July 19, 1892.

(No Model.)

. INVEN:'O7R,\I X15 1W$ Att.

UNITED STATES PATENT OFFICE.

JAMES J. TURNER, F PITTSBURG, ASSIGNOR TO THE UNION SYVITOII AND SIGNAL COMPANY, OF SW'ISSVALE, PENNSYLVANIA.

COMPENSATOR FOR SIGNALS.

SPECIFICATION formingpart of Letters Patent No. 479,380, dated July 19, 1892.

' Application filed February 11, 1892. Serial No. 421,165. (No model.)

To all whom it may concern: vice versa, the levers 3and 4being connected Be it known that I, JAMES J. TURNER, a to the signal and the levers 6 and 7 to the citizen of the United States, residing at Pittsoperating-lever. As the connections to lever burg, in the county of Allegheny and State and signal are flexible, it will be evident by 5 5 of Pennsylvania, have invented or discovered reference to Fig. 1 that the motion imparted a certain new and useful Improvement in to the lever 4 by a pull on the wire 9 must Compensators for Signals, of which improvebe transmitted to the lever 7 in order to pull ment the following is a specification. the wire 11, as the lever 6 is so shifted by the The invention described herein relates to lever 4 when actuated by a pull on the wire IO certain improvements in the form of compen- 9 as to exert a push on the wire 10 and will sators for signals described and claimed in not, therefore, operate to actuate the signal. Letters Patent No. 470,148, granted March 1, A similar movement of the lever 3 to shift a 1892, signal must be transferred to the lever 6.

The invention set forth in said patent con- In order to transmit motion from the levers I5 sists, generally stated, in two shafts connect- 3 or 4 to the levers 7 and 6, respectively, said ed, respectively, to an operating-lever and to levers are arranged and connected as shown a signal, mechanism for transmitting rotary in Figs. 1 and 26. g., the levers 3 and 4 are motion from one shaft to the other, means for mounted on a common pivot-pin 22, and holding the connections from the operatingthe levers 6 and 7 are similarly mounted on 2o lever and signal under constant tension, and a pin 23, the levers 3 and 6 being in or ap connections between said shafts whereby proximately in the same plane, as are also horizontal movement is transmitted from one the levers 4 and '7. The arm 3 of l ver shaft to the other. 3 is connected by a link 5 to the arm 7 of The invention described herein has for its lever 7. The lever 4 is constructed as shown 25 object certain further and additional imin Figs. 1 and 2, with only one arm 4 pro,

provernents in compensators for signal conjecting from the hub, the other arm 4 pronections; and in general terms the invention jecting from the arm 4 at or near its outer consists in the construction and combination, end. This arm 4 is connected by a link 5 substantially as hereinafter described and with the arm 6 of the lever 6. As the levers 8o 0 l i d, 3 and 7 lie in different planes, as do also the In the accompanying drawings, forming a levers 4 and 6,the arms 3 and 4 of the levers part of this specification, Figure 1 is a plan 3 and4 are so bent that the outer ends of said View of another form of compensator. Fig. arms will lie in the planes of the arms 7 and 2 is an elevation of 1 the same, and Fig. 3 is a 6* of the lovers 6 and 7, as shown in Fig. 2. 3 5 sectional detail of the locking mechanism. If the arm 4 be pulled by the operating-lever The bed-plate 1 of the compensator is pro- (not shown) in the direction of the arrow d, vided at its ends with suitable flanges or feet the arm 6 of lever 6 will be shifted to the 2, whereby it may be secured to the track, right; but as the connections 8, 9, 10, and 11 ties, or any other suitable foundation. Bellto the operating-lever and signal are flexible o 0 crank levers 3 and 4 are pivotally mounted it is evident that the movement of the arm 6 on the bed-plate in suitable relation to each to the right will only slacken the wire 10. It other and have their arms 3 and 4 connected is therefore necessary that the arm 7 a must by links 5 to corresponding arms 7 and 6", be shifted to the left in order that'a pull may respectively, of bell-crank levers 6 and 7, also be exerted on the wire 11 to shift the signal. 5 45 pivotally mounted on the bed-plate in suit- In order to elfect the simultaneous but opable relation to each other and to the lovers pvosite movements of the levers 3 and 7 when 3 and 4. The arms 3 and 4 of the levers 3 the levers 4 and 6 are shifted, and vice versa, and4 are connected by wires 8 and 9 or other the arm 6 is connected by a rod 24 to a box suitable means to an operating-lever, and the or sleeve 25, and the arm 3 is connected to 50 arms 6 and 7 t of the levers 6 and 7 are conone end of a rod 26,whose opposite end passes nected by wires 10 and 11 to the signal, or through the block or sleeve 25, as shown in Figs. 1 and 3. The upper edge of the rod 26 is provided with serrations,with which serrations on the lower edge of ablock 27 engage, said block being arranged in the box or sleeve 25. The block 27 is adapted to be held against the rod 26, so as to lock the rod to the box by a pin 28, projecting into the box through a cam-slot 29, formed in the side thereof. This pin is attached to one end of a rod 30, whose opposite end is connected to the arm 7 of the lever 7. The several parts of this locking deviceare so constructed and adjusted that when the signal is at either danger or safety position the pin 28 will be in the portions e of the slot 29, so that the block 27 is free to move away from the rod 26, which can then move independent of the box, or vice versa. As the arm 6 moves to the right, as stated, the box 25 will move therewith, causing the pin 28 (the arm 7 being stationary) to be shifted to the horizontal portion of the slot 29, thereby locking the block 27 and box 25 to the rod 26, so that said rod and the arm 3, connected thereto,will move to the right with the arm 6. This movement of the arm 3 to the right will cause the arm 7 a to move to the left, thereby exerting the desired pull on the wire 11, leading to the signal. If the arm 3 of the lever 3 (the lever being in normal position, the pin 28 being in the left-hand portion 6 of the slot 29) should be moved to the left, the arm 7 of lever 7 willbe movedto the right, thereby causing the pin 28 to enter the straight portion of the slot and lockingthe box 25 to the rod 26 and causing it and the arm 6 to move to the left, as desired.

As shown in Figs. 1 and 2, the arm 42" of the lever 4., which is one of the connected pairs of levers, is connected by a spring 31 to the arm 7 of the lever 7, (a member of the other pair of connected levers,) thereby placing the wires 8, 9, 10, and 11, connected with the arms of the several levers, under a tension, so that in case of expansion of said wires the arms of the several levers connected to the wires will be drawn in toward each other and in case of contraction of the wires said arms will move out. As the bar 26 is released from engagement with the box 25 when the signal is at safety as well as danger, the locking of the pairs of levers together, as hereinbefore described, will not interfere with a proper compensation.

I claim herein as my invention- 1. In a compensator for signals, the combi- 5 5 nation of two pairs of connected bell-crank levers, one member of each pair being connected to an operating-lever and the other member of each pair to asignal, and mechanism whereby motion is transmitted from the lever-operated member of one pair to the signal-operating member of the other pair, substantially as set forth.

2. In a compensator for signals, the combination of two pairs of connected bell-crank levers, one member of each pair being connected to an operating-lever and the other member of each pair to a signal, mechanism whereby motion is transmitted from the leveroperated member of each pair to the signaloperating member of the other pair, and a spring connected to one member of the leveroperated pair and to the signal -operating member of the otherpair, substantially as set forth.

3. In a compensator for signals, the combination of two pairs of connected bell-crank levers, one member of each pair being connected to an operating-lever and the other member of each pair to a signal, mechanism whereby motion is transmitted from the lever member of each pair to the signal-operating member of the other pair, a spring connected to one member of the lever-operated pair and to the signal-operating member of the other pair, and a lock for securing the synchronous movement of all the members of both pairs, substantially as set forth.

4.. In a compensator for signals, the combination of two pairs of connected levers 3 7 and 4 6, a box having a cam-slot formed therein and connected to one arm of the lever 6, a serrated or toothed rod connected to the lever 3 and projecting into said box, a toothed or serrated block arranged in the box and adapted 5 to engage the serrated rod, and a pin operated by the lever 7 for forcing the block into engagement with the serrated r0d,substantially as set forth.

In testimony whereof I have hereunto set too my hand.

JAMES J. TURNER.

Witnesses:

DARWIN S. Woncorr, R. H. WHITrLEsEY. 

